I feel that in usage, lyrical is the 'soft jazz' that is always done to sad, angsty, nostalgic or sweet songs. In usage, 'contemporary' usually means 'modern jazz' or 'new jazz' that is done to more of a variety of music.
The greatest integer function of a real number x is represented by f(x) = [x] or |_x_|. For all real numbers x, the greatest integer function returns the largest integer less than or equal to x. In other words, the greatest integer function rounds down a real number to the nearest integer.
Multiply N by (N+1) and divide by 2. When you've defined the integer value of N, plug it into the equation (N(N + 1))/2. This equation finds the sum of all the integers between 1 and N. 1  In our example, we would plug 100, our value for N, into the equation.( 2 N(N + 1))/2 becomes (100(100 + 1))/2.ultiply N by (N+1) and divide by 2. When you've defined the integer value of N, plug it into the equation (N(N + 1))/2. This equation finds the sum of all the integers between 1 and N. 1  In our example, we would plug 100, our value for N, into the equation. ( 2 N(N + 1))/2 becomes (100(100 + 1))/2.